Pipe welding machine with positioning mechanism

Abstract

The utility model discloses a pipe welding machine with positioning mechanism belongs to pipe welding machine field, concretely is a kind of pipe welding machine with positioning mechanism, including board, the top of supporting plate is fixedly connected with pneumatic cylinder, the top of pneumatic cylinder is provided with telescopic link, telescopic link outer sleeve is connected with limit block, the both ends of limit block are fixedly connected with side plate, the both sides of side plate are hingedly connected with clamping plate, one pair clamping plate middle part is hingedly connected with connecting block, one pair connecting block one end is hingedly connected with the one end of connecting plate, the one end of clamping plate is fixedly connected with clamping head, the below of pneumatic cylinder is provided with workstation, by setting the hingedly connected of side plate and clamping plate, so that hingedly connected design makes clamping plate can rotate around side plate, form the clamping structure that can open and close, adapt to different diameter pipe, by setting the fixed connection of clamping head and clamping plate, so that when clamping plate closes, clamping head is fixed pipe by mechanical locking, avoid when welding due to thermal expansion or gravity offset.

Description

Technical Field

[0001] This utility model relates to the field of pipe welding machine technology, specifically a pipe welding machine with a positioning mechanism. Background Technology

[0002] With the increasing demands for precision and efficiency in pipeline welding from industries such as construction, energy, and automobiles, traditional manual welding or semi-automatic equipment can no longer meet the needs of high-precision, high-volume production, especially in fields such as oil and gas pipelines and pharmaceutical clean pipelines.

[0003] In the prior art, the upper surface of the mounting plate is equipped with three support seats, and two symmetrically distributed connecting shafts are arranged through the support seats. Each connecting shaft is equipped with a precision roller. This support system effectively distributes the load and prevents vibration displacement during the welding process by having six rollers simultaneously contact the outer wall of the rolled tube.

[0004] Since the rollers rely solely on friction for support, the high temperatures during welding can cause changes in the coefficient of friction between the rolled tube and the rollers, leading to slippage or misalignment. Furthermore, during welding, the rolled tube may expand due to heat or gravity, causing slippage. When the rolled tube expands due to heat, the rollers cannot actively compensate for the clamping force, potentially increasing the support gap. Therefore, this invention provides a rolled tube welding machine with a positioning mechanism to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a pipe welding machine with a positioning mechanism, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A pipe welding machine with a positioning mechanism includes a support plate, a cylinder fixedly connected to the top of the support plate, a telescopic rod provided on the top of the cylinder, a limit block sleeved on the telescopic rod, side plates fixedly connected to both ends of the limit block, clamping plates hinged to both sides of the side plates, a connecting block hinged to the middle of a pair of clamping plates, a connecting plate hinged to one end of each pair of connecting blocks, a clamping head fixedly connected to one end of the clamping plate, and a worktable provided below the cylinder.

[0010] Preferably, the top of the workbench is provided with a rectangular groove and a first guide rail. A first sliding block is slidably connected to the top of the first guide rail. A motor is provided in the rectangular groove. A lead screw is fixed to one end of the motor. A moving block is sleeved on the lead screw. A fixed block is fixed to the top of the moving block. A base plate is fixed to the top of both the fixed block and the first sliding block. A second guide rail is provided on the top of the base plate. A second sliding block is slidably connected to the top of the second guide rail. The second sliding block is fixed to the receiving plate.

[0011] Preferably, a laser welding frame is provided on the top of the workbench, a laser welding head is provided at one end of the laser welding frame, a robotic arm is fixed to one side of the workbench, and a laser alignment sensor is provided at one end of the robotic arm.

[0012] Preferably, a shock-absorbing plate is fixedly connected to the inner wall of the rectangular groove, a spring is fixedly connected to one end of the shock-absorbing plate, and a rubber plate is fixedly connected to the other end of the spring.

[0013] Preferably, a bearing is sleeved on one end of the lead screw, and the bearing is disposed inside one side wall of the rectangular groove.

[0014] Preferably, one end of the clamping head is provided with a rubber pad.

[0015] (III) Beneficial Effects

[0016] 1. In this utility model, by setting the hinge between the side plate and the clamping plate, the clamping plate can rotate around the side plate to form an openable clamping structure that can adapt to coiled tubes of different diameters. By setting the clamping head to be fixedly connected to the clamping plate, when the clamping plate is closed, the clamping head locks the coiled tube by friction or mechanical locking, thus avoiding displacement due to thermal expansion or gravity during welding.

[0017] 2. In this utility model, by integrating the worktable and the rectangular groove, the motor drives the lead screw to rotate, and the moving block drives the welding head to move along the guide rail one to achieve lateral positioning. By setting the sliding connection between the guide rail one and the sliding block one, the rotation of the lead screw is converted into the linear motion of the sliding block one. In conjunction with the sliding block two of the guide rail two, two-dimensional planar positioning is achieved. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a pipe welding machine with a positioning mechanism.

[0019] Figure 2 for Figure 1 Enlarged structural diagram at point A in the diagram;

[0020] Figure 3 This is a schematic diagram of the structure of a moving component in a pipe welding machine with a positioning mechanism;

[0021] Figure 4This is a schematic diagram of the shock-absorbing component in a pipe welding machine with a positioning mechanism;

[0022] Figure 5 for Figure 4 A magnified structural diagram at point B in the diagram.

[0023] In the picture:

[0024] 1. Support plate; 11. Cylinder; 12. Telescopic rod; 13. Limiting block; 14. Side plate; 15. Clamping plate; 16. Connecting block; 17. Connecting plate; 18. Clamping head; 19. Worktable; 2. Rectangular groove; 21. Guide rail one; 22. Sliding block one; 23. Motor; 24. Lead screw; 25. Moving block; 26. Fixing block; 27. Base plate; 28. Guide rail two; 29. ​​Sliding block two; 3. Laser welding frame; 31. Laser welding head; 32. Robotic arm; 33. Laser centering sensor; 4. Shock absorber; 41. Spring; 42. Rubber plate; 5. Bearing; 6. Rubber pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a pipe welding machine with a positioning mechanism, such as... Figure 1-5 As shown, the system includes a support plate 1, a cylinder 11 fixedly connected to the top of the support plate 1, a telescopic rod 12 mounted on the top of the cylinder 11, a limiting block 13 sleeved on the telescopic rod 12, side plates 14 fixedly connected to both ends of the limiting block 13, clamping plates 15 hinged to both sides of the side plates 14, a connecting block 16 hinged to the middle of a pair of clamping plates 15, a connecting plate 17 hinged to one end of each pair of connecting blocks 16, and a clamping head 18 fixedly connected to one end of the clamping plate 15. A worktable 19 is provided below the cylinder 11. During operation, since the rollers rely solely on friction for support, the high temperature during welding may cause the rolled pipe to rub against the rollers. The change in the coefficient of friction can easily lead to slippage or displacement. During the welding process, the tube may slip due to thermal expansion or gravity. When the tube expands due to heat, the rollers cannot actively compensate for the clamping force, which may increase the support gap. By setting the hinge between the side plate 14 and the clamping plate 15, the clamping plate 15 can rotate around the side plate 14, forming an openable clamping structure to accommodate tubes of different diameters. By setting the clamping head 18 to be fixed to the clamping plate 15, when the clamping plate 15 is closed, the clamping head 18 locks the tube by friction or mechanical locking, preventing displacement due to thermal expansion or gravity during welding.

[0027] like Figure 1 and Figure 4 As shown, the top of the workbench 19 is provided with a rectangular groove 2 and a guide rail 21. A sliding block 22 is slidably connected to the top of the guide rail 21. A motor 23 is installed inside the rectangular groove 2. A lead screw 24 is fixedly connected to one end of the motor 23. A moving block 25 is sleeved on the lead screw 24. A fixed block 26 is fixedly connected to the top of the moving block 25. A base plate 27 is fixedly connected to the top of both the fixed block 26 and the sliding block 22. A guide rail 28 is provided on the top of the base plate 27. A sliding block 22 is slidably connected to the top of the guide rail 28. Sliding block 29 is fixedly connected to the receiving plate. During operation, by integrating the worktable 19 with the rectangular groove 2, the motor 23 drives the lead screw 24 to rotate. The moving block 25 drives the welding head to move along the guide rail 21 to achieve lateral positioning. By setting the sliding connection between the guide rail 21 and the sliding block 22, the rotation of the lead screw 24 is converted into the linear motion of the sliding block 22. In conjunction with the sliding block 29 of the guide rail 28, two-dimensional planar positioning is achieved.

[0028] like Figure 1 As shown, a laser welding frame 3 is provided on the top of the workbench 19, and a laser welding head 31 is provided at one end of the laser welding frame 3. A robotic arm 32 is fixed to one side of the workbench 19, and a laser alignment sensor 33 is provided at one end of the robotic arm 32. During operation, by connecting the laser welding frame 3 and the laser welding head 31, the robotic arm 32 drives the laser alignment sensor 33 to scan the center of the rolled tube, and the laser welding head 31 automatically adjusts the welding position according to the feedback.

[0029] like Figure 5 As shown, a damping plate 4 is fixed to the inner wall of the rectangular groove 2. A spring 41 is fixed to one end of the damping plate 4, and a rubber plate 42 is fixed to the other end of the spring 41. During operation, by setting the connection between the damping plate 4 and the spring 41, the elastic deformation of the spring 41 offsets the impact force, and the rubber plate 42 further attenuates the high-frequency vibration, thereby improving the stability of the system.

[0030] like Figure 4 As shown, a bearing 5 is sleeved on one end of the lead screw 24. The bearing 5 is located inside one side wall of the rectangular groove 2. During operation, the bearing 5 supports the rotating end of the lead screw 24 by the cooperation between the lead screw 24 and the bearing 5, thereby reducing wear, extending service life, and reducing transmission clearance.

[0031] like Figure 2 As shown, a rubber pad 6 is provided at one end of the clamping head 18. During operation, by setting the clamping head 18 and the rubber pad 6, the rubber pad 6 is elastically deformed during clamping, forming multiple points of contact with the surface of the coil, thereby enhancing the clamping force and dispersing the pressure.

[0032] Working Principle: Since the rollers rely solely on friction for support, the high temperature during welding may cause changes in the coefficient of friction between the coiled tube and the rollers, leading to slippage or displacement. During welding, the coiled tube may slip due to thermal expansion or gravity. When the coiled tube expands due to heat, the rollers cannot actively compensate for the clamping force, potentially increasing the support gap. By hinged between the side plate 14 and the clamping plate 15, the clamping plate 15 can rotate around the side plate 14, forming an openable clamping structure to accommodate coiled tubes of different diameters. By fixing the clamping head 18 to the clamping plate 15, when the clamping plate 15 is closed, the clamping head 18 secures the coiled tube through friction or mechanical locking, preventing displacement due to thermal expansion or gravity during welding. The integration of the worktable 19 and the rectangular groove 2 allows the motor 23 to drive the lead screw 24 to rotate, which in turn moves the welding head along the guide rail 21 via the moving block 25, achieving lateral positioning. The sliding contact between rail 21 and sliding block 22 transforms the rotation of lead screw 24 into linear motion of sliding block 22. This, combined with sliding block 29 of guide rail 28, achieves two-dimensional planar positioning. The connection between laser welding frame 3 and laser welding head 31 allows robotic arm 32 to drive laser alignment sensor 33 to scan the center of the rolled tube. Laser welding head 31 automatically adjusts its welding position based on feedback. The connection between damping plate 4 and spring 41 allows the elastic deformation of spring 41 to offset impact forces, while rubber plate 42 further attenuates high-frequency vibrations, improving system stability. The cooperation between lead screw 24 and bearing 5 allows bearing 5 to support the rotating end of lead screw 24, reducing wear, extending service life, and lowering transmission clearance. The clamping head 18 and rubber pad 6 allow the rubber pad 6 to elastically deform during clamping, forming multi-point contact with the rolled tube surface, enhancing clamping force and dispersing pressure.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pipe welding machine with a positioning mechanism, comprising a support plate (1), characterized in that: A cylinder (11) is fixedly connected to the top of the support plate (1). A telescopic rod (12) is provided on the top of the cylinder (11). A limiting block (13) is sleeved on the telescopic rod (12). Side plates (14) are fixedly connected to both ends of the limiting block (13). Clamping plates (15) are hinged to both sides of the side plates (14). A connecting block (16) is hinged to the middle of a pair of clamping plates (15). One end of a connecting plate (17) is hinged to one end of a pair of connecting blocks (16). A clamping head (18) is fixedly connected to one end of the clamping plate (15). A worktable (19) is provided below the cylinder (11).

2. The pipe welding machine with a positioning mechanism according to claim 1, characterized in that: The top of the workbench (19) is provided with a rectangular groove (2) and a guide rail (21). A sliding block (22) is slidably connected to the top of the guide rail (21). A motor (23) is provided in the rectangular groove (2). A lead screw (24) is fixedly connected to one end of the motor (23). A moving block (25) is sleeved on the lead screw (24). A fixed block (26) is fixedly connected to the top of the moving block (25). A base plate (27) is fixedly connected to the top of both the fixed block (26) and the sliding block (22). A guide rail (28) is provided on the top of the base plate (27). A sliding block (29) is slidably connected to the top of the guide rail (28). The sliding block (29) is fixedly connected to the receiving plate.

3. The pipe welding machine with a positioning mechanism according to claim 1, characterized in that: A laser welding frame (3) is provided on the top of the workbench (19), and a laser welding head (31) is provided at one end of the laser welding frame (3). A robotic arm (32) is fixed to one side of the workbench (19), and a laser alignment sensor (33) is provided at one end of the robotic arm (32).

4. A pipe welding machine with a positioning mechanism according to claim 2, characterized in that: A damping plate (4) is fixed to the inner wall of the rectangular groove (2). A spring (41) is fixed to one end of the damping plate (4), and a rubber plate (42) is fixed to the other end of the spring (41).

5. A pipe welding machine with a positioning mechanism according to claim 2, characterized in that: One end of the lead screw (24) is fitted with a bearing (5), which is located inside one side wall of the rectangular groove (2).

6. A pipe welding machine with a positioning mechanism according to claim 1, characterized in that: A rubber pad (6) is provided at one end of the clamping head (18).

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